-
1دورية أكاديمية
المؤلفون: Olcay, Vania, Atria, Pablo, Hirata, Ronaldo, Sampaio, Camila S.
المصدر: Quintessence International; Apr2024, Vol. 55 Issue 4, p286-294, 9p
مصطلحات موضوعية: DIGITAL technology, SCANNING systems, COST control, ORTHODONTICS, DENTAL fillings, DENTAL resins, AESTHETICS, COMPUTER software, SILICONES, DENTAL casting, DENTAL materials, PHOSPHORIC acid, MINIMALLY invasive procedures, PHOTOGRAPHY, CORRECTIVE orthodontics, WORKFLOW, ORTHODONTIC appliances, THREE-dimensional printing, PLASTIC surgery, HEALTH care teams, TEETH polishing, ECONOMICS
-
2دورية أكاديمية
المؤلفون: Masumi Nishine, Hiro Kobayashi, Kosei Ito, Juro Wadachi, Akinori Tasaka, Shuichiro Yamashita
المصدر: International Journal of Prosthodontics; 2024, Vol. 37 Issue 4, p457-459, 3p
مصطلحات موضوعية: SCANNING systems, RECORDING & registration, SILICONES, VOLUNTEERS, VOLUNTEER service
-
3رسالة جامعية
المؤلفون: Fenollosa Artés, Felip
المساهمون: University/Department: Universitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica
مرشدي الرسالة: Buj Corral, Irene, Gomà Ayats, Joan Ramon
المصدر: TDX (Tesis Doctorals en Xarxa)
مصطلحات موضوعية: This doctoral thesis has been focused on the challenge to obtain, using Additive Manufacturing (AM), models for surgical planning, under the premise that the equipment to obtain them should be accessible to the hospital field. The objective is to spread the use of prototypes as a surgical training tool, upgrading medical practice in the same way that technologies which enhanced radiographs at the time. The reason for using AM, instead of more traditional technologies, is its capacity to materialise, in a straight way, the digital data of the patient anatomy coming from three-dimensional scanning systems, making it possible to achieve personalised models. The results are basically the generation of new knowledge in order to create accessible multi-material 3D printing machines that would allow to obtain models mimicking living tissues. Related to the will to spread this technology, research has focused on open source technologies, mainly Fused Filament Fabrication (FFF), and similar technologies based on catalitzable liquids. This research is aligned with the development work related to AM at CIM UPC, and in this special field there is a close cooperation with Hospital Sant Joan de Déu in Barcelona (HSJD). The first section of the thesis includes a description of the state of the art, including the existing technologies and their application within the medical field. For the first time, basis have been laid for the characterisation of living tissues – primarily soft tissues – to support the selection of materials mimicking them in an AM process, so as to improve the surgical planning experience. The stiffness linked to most of the materials commonly used in 3D printing, makes them unhelpful to simulate tumours and other anatomic references. Then, parameters like density, viscoelasticity, soft materials industry characterisation, soft tissues and vessels elastic modulus, its hardness, mimicking blood and sterilisation requirements, are successively treated. The second section starts exploring FFF 3D printing. Processes are classified from the point of view of multi-materiality, a key factor for surgical planning models, telling multi-nozzle solutions from mixing printheads solutions. A study about probable useful materials (both filaments and liquids) to mimic soft tissues is included. It is stated how liquids, compared to filaments, are more demanding related to additive manufacturing processes, and different ways to print very soft materials are detailed. Finally, six real cases – in which the doctorate has participated in these last years –, involving collaboration with HSJD, are reported. In the origin it can be found the difficulty to perform tumour resection surgeries to children, like neuroblastoma type, and the initiative of Dr. Lucas Krauel. Finally, Section 3 is devoted to the exploration of many concepts (up to 8), activity performed along the last five years thanks to the technical resources of CIM UPC and the academic activity of the UPC students, related to their final degree thesis, therefore reaching the construction of several machines and mechanisms to test them. The wide and systematic research about these concepts makes closer the day to reach a desktop 3D printing multimaterial solution. It is found that the best way to progress is having a plurality of independent printheads in order to enable a 3D printer to integrate some of the researched concepts, thus materialising a possible solution. To sum up, it is raised how a 3D printer for surgical training models should be like, for the purpose of serving as a basis for new developments., Àrees temàtiques de la UPC::Enginyeria mecànica
وصف الملف: application/pdf
URL الوصول: http://hdl.handle.net/10803/667421
-
4دورية أكاديمية
المؤلفون: Sampaio-Fernandes, Manuel António F., Pinto, Ricardo, Sampaio-Fernandes, Margarida M., Sampaio-Fernandes, João Carlos, Marques, Duarte, Figueiral, Maria Helena
المصدر: International Journal of Prosthodontics; 2024, Vol. 37 Issue 1, p10-24, 15p
مصطلحات موضوعية: SCANNING systems, SILICONES, LABORATORIES, GYPSUM
-
5دورية أكاديمية
المؤلفون: Cordaro, Matteo, Sailer, Irena, Zarauz, Cristina, Xinran Liu, Duygu Karasan
المصدر: International Journal of Prosthodontics; Nov/Dec2023, Vol. 36 Issue 6, p689-696, 8p
مصطلحات موضوعية: DENTAL impressions, DIGITAL dental impression systems, SCANNING systems, ROOT-mean-squares, DENTAL arch, PILOT projects, MACHINE learning
-
6دورية أكاديمية
المصدر: IEEE Microwave and Wireless Technology Letters IEEE Microw. Wireless Tech. Lett. Microwave and Wireless Technology Letters, IEEE. 33(8):1139-1142 Aug, 2023
-
7دورية أكاديمية
المؤلفون: Zheng, Fu, Wang, Yadong, Chen, Wei, Zhang, Lifeng
المصدر: Metallurgical & Materials Transactions. Part B; Oct2024, Vol. 55 Issue 5, p3222-3236, 15p
مصطلحات موضوعية: STEEL founding, CONTINUOUS casting, SCANNING systems, ELECTROMAGNETIC forces, CAST steel
-
8دورية أكاديمية
المؤلفون: Kung, Hao‐Ting, Cui, Sophia X., Kaplan, Jonas T., Joshi, Anand A., Leahy, Richard M., Nayak, Krishna S., Haldar, Justin P.
المصدر: Magnetic Resonance in Medicine; Oct2024, Vol. 92 Issue 4, p1649-1657, 9p
-
9دورية أكاديمية
المؤلفون: Lee, Wonyong, Kim, Hyungki
المصدر: Multimedia Tools & Applications; Sep2024, Vol. 83 Issue 32, p78577-78592, 16p
مصطلحات موضوعية: POINT cloud, SUPERVISED learning, AUTONOMOUS vehicles, SCANNING systems, CLASSIFICATION, DEEP learning
-
10دورية أكاديمية
المؤلفون: Wang, Qian, Abdelhafez, Yasser G, Nalbant, Hande, Spencer, Benjamin A, Bayerlein, Reimund, Qi, Jinyi, Cherry, Simon R, Nardo, Lorenzo, Badawi, Ramsey D
المصدر: Physics in Medicine & Biology; 9/21/2024, Vol. 69 Issue 18, p1-12, 12p
مصطلحات موضوعية: POSITRON emission tomography, CANCER patients, LUNG cancer, SCANNING systems, STATISTICAL correlation